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Everything about Permutation

Mathematical version of an order change

In mathematics, a permutation is a bijective function of a finite set onto itself. When the set is represented as an ordered sequence of its members, a permutation amounts to change the place of the members of the set: if f is a permutation, ⁠⁠ is the new place of the ith member of the sequence. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: PermutationA 5-minute orientation
  2. Skim a recent paper: Image encryption algorithm based on a 2D-CLSS hyperchaotic map using simultaneous permutation and diffusionInfluential work since 2022
  3. Pick up a classic book: Combinatorics of PermutationsThe most-reprinted book on the subject
  4. Read the landmark paper: Nonparametric permutation tests for functional neuroimaging: A primer with examplesCited 5,853 times
  5. Go sideways: Lehmer codeA closely related topic
  6. Go sideways: Parity of a permutationA closely related topic

📖 Definitions

Noun One of the ways something exists, or the ways a set of objects can be ordered.

Noun A one-to-one mapping from a finite set to itself.

Noun An ordering of a finite set of distinct elements.

Noun A transformation of a set's prime form, by applying one or more of certain operations, specifically, transposition, inversion, and retrograde.

🏆 Landmark papers (most cited)

🆕 Influential since 2022

📚 Books worth reading

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

🔗 Related topics